<template>
  <el-dialog
    width="500px"
    title="员工导入"
    :visible="showExcelDialog"
    @close="$emit('update:showExcelDialog', false)"
  >
    <el-row type="flex" justify="center">
      <div class="upload-excel">
        <input
          ref="excel-upload-input"
          class="excel-upload-input"
          type="file"
          accept=".xlsx, .xls"
          @change="selectFile"
        >
        <div class="drop">
          <i class="el-icon-upload" />
          <el-button type="text" @click="downloadTemplate">下载导入模板</el-button>
          <span>将文件拖到此处或
            <el-button type="text" @click="uploadFile">点击上传</el-button>
          </span>
        </div>
      </div>
    </el-row>
    <el-row type="flex" justify="end">
      <!-- update:props属性名，值 直接修改 .sync修饰符的属性值 -->
      <el-button size="mini" type="primary" @click="$emit('update:showExcelDialog', false)">取消</el-button>
    </el-row>
  </el-dialog>
</template>
<script>

import { getEmpTemplate, exportFile } from '@/api/employee'
import FileSaver from 'file-saver'

export default {
  name: 'ExportExcel',

  props: {
    showExcelDialog: {
      type: Boolean,
      default: false
    }
  },
  methods: {
    async downloadTemplate() {
      try {
        const res = await getEmpTemplate()
        FileSaver.saveAs(res, '员工上传模板.xlsx')
        this.$message.success('模板下载成功')
      } catch (error) {
        this.$message.error('模板下失败')
        console.log(error)
      }
    },

    // 上传文件
    uploadFile() {
      this.$refs['excel-upload-input'].click()
    },
    // 选择文件
    async selectFile(e) {
      const files = e.target.files
      if (files.length > 0) {
        const formData = new FormData()
        formData.append('file', files[0])
        try {
          await exportFile(formData)
          // 重新加载数据
          this.$emit('uploadSuccess')
          // 关闭弹层
          this.$emit('update:showExcelDialog', false)
        } catch (error) {
          console.log(error)
        } finally {
          // 清空文件选择器
          this.$refs['excel-upload-input'].value = ''
        }
      }
    }
  }
}
</script>

  <style scoped lang="scss">
      .upload-excel {
        display: flex;
        justify-content: center;
        margin: 20px;
        width: 360px;
        height: 180px;
        align-items: center;
        color: #697086;
        .excel-upload-input {
          display: none;
          z-index: -9999;
        }
        .btn-upload,
        .drop {
          border: 1px dashed #dcdfe6;
          width: 100%;
          height: 100%;
          text-align: center;
          line-height: 160px;
          border-radius: 8px;
          display: flex;
          flex-direction: column;
          justify-content: center;
        }
        .drop {
          line-height: 40px;
          color: #bbb;
          i {
            font-size: 60px;
            display: block;
            color: #c0c4cc;
          }
        }
      }
  </style>
